Chart-suspension device.



G. S. JENKINS.

CHART SUSPENSION DEVICE.

Pruoulon rILnD APR. 2. 1909.

nlllgmlmi CHARLES S. JENKINOF LANSDALE, PENNSYLVANIA.

CHART-SUSPEN SION DEVICE.`

Specification of Letters Patent.

Application led April 2, 1909.

PatentedAug. 8, 1909.

Serial No. 487,482.

To all whom it may concern:

Be it known that I, CHARLES S. JENKINS, a citizen ot the United States,and a resident ot' the city of Lansdale, county of Montgomery and Stateof Pennsylvania, have invented an Improvement in Chart- SuspensionDevices, of which the following is ar specification.

My invention has reference to chartsus- 'pension devices and consists otcertain impro.'ements which are fully set :forth in the following'specification and shown in the accompanying drawings which form a partthereof.

In machines for exhibiting charts whether of maps, wall paper, or forother suitable purposes, there is usually employed a cylinder havingabout its periphery a series of supports to which the ends of the chartsare attached, and by the rotation of which cylinder any particular chartmay be caused to be brought into view.

The object ot' my invention is to provide means for detachably securingthe chart in position upon the cylinder or rotating frame whereby thesubstitution of a chart may be readily made without dismantlingthemachine or its case;

Furthermore, my object is to provide detachable means for the chartwhich will not require any more space longitudinally of the cylinder orrotating frame than its usual length so that the chart exhibitor ormachine may be employed in places `where there would be no room at theend for withdrawing rods or supports from which the charts aresuspended.

My invention consists of a rotating frame having a plurality of disksshaped to receive a plurality of bars from which the charts aresuspended, combined with such bars and their charts, and engaging partsbetween the bars and disks, whereby a very slight end motion of the barsafter being placed in position upon the disks will cause them to beengaged.

My invention further consists in the above construction combined withlocking means, whereby the bars may be held against longitudinalmovement and hence against disengagement excepting as may be required.

My invention also comprehends details of construction which, togetherwith the features specied, will be better understood by. reference tothe drawings, in which:

Figure l is a plan view of a rotating frame with one of the chartsupporting bars in position; .F 9. is a perspective view showing threeot' the chart supporting bars in engagement with one of the supportingdisks. Fig. 3 is a detached perspective view of a portion of one ot thesupporting bars and. charts; Fig. et is a perspective view of thelocking disk for holding the bars against end movement; and Fig. 5 is asectional plan view showing a modification of the means for locking t-hebars against end movement.

2 is a shaft which carries the series of notched disks 3 and is providedwith a grooved pulley l0 at one end for rotating it. This shaft isusually supported within a case which shields the charts from aboveagainst depositions of dust and dirt, but such case not being shown. Theseries of notched disks 3 are shaped substantially as indicated in Fig.Q, having V-shaped notches e and small holes or apertures 5 innnediatelyin line with the bottoms ot said notches. These various notched disksresemble gear wheels and they are so secured upon the shaft 2 that thenotches i `of the whole series are in alinemcnt so as to receivelongitudinal chart supporting bars G. These bars G are preferablyV-shaped in cross section so as to be received in the V-shaped notches11, and the chart or material to be exhibited 8 is wrapped about theV-shaped bars, as indicated in Fig. 3. These bars 6 are also providedwith a series `of angular retaining pins 7 and the charts may beprovided with slots 9 to permit the pins 7 to extend :in exposedposition. These pins 7 also act tohold the chart from being drawn ott'the bars 6. The bars with the charts attached are then inserted in thenotches 4 of the disks 3 and moved slightly to the right (Fig. l) so asto cause `the angular pins T to engage the holes in the disks, as morefully shown in Fig. 5. ln this position the bars 6 with their chartsattached are held firmly to the rotating shaft. and its disks. To holdthe bars G against accidental longitudinal shitting and resultingdisengagement ot' the pinsl T Vwith the holes in the disks, I provide alocking plate ll which is rotatably supported upon a hub 12 secured tothe shaft 2. This locking 1 plate is held betweenthe hub and theadjacent disk 3 so that it cannot move longitudinally of the shaft butmay be adjusted about the same if desired. Thislocking disk 11isprovided with a single notch 13 (Fig. 1) which has a shape such tha-tanyT one of the bars 6 could be moved end-wise through it. It will nowbe seen that if it is desired to disengage one of the bars 6 with itsattached plate, it is only necessary to bring the end of the bar inalinement with the notch 13 of the locking disk and thenmove it slightlyto the left (Fig. 1). This will permit the bar to move sufficiently todisengage the pins 7 from the holes in the disk 3, and in which case thechart and the bar may be removed, the chart changed, and the bar withthe new chart reinserted.

In place of employing the notcheddisk 11 as the locking means, I mayemploy the construction shown in Fig. 5. In this construction thelocking plate 11, instead of being held against longitudinal movementbe` tween the hub 12 and the disk 3, is free to have an end movementwhen not otherwise prevented, and said locking plate is provided with aspring catch 1l adapted to engage an annular or other groove 13 in thehub 12. `When the plate is in the position shown in Fig. 5 the barscannot be moved to the left to disengage the pin 7. By withdrawing thespring catch 14 the locking plate may be moved to the left until itsinner liange abuts against the flange of the hub 12 and this will givesufficient space for an end-wise movement of the bar 6 to permit thedisengagement of the pins T with the holes 5 in the disks 3.

The essential feature of my invention lies in the fact that the chartsupporting bars are carried in a rotary direction by a suitable rotaryframe and that they are held 'to the rotary frame by engaging partswhich engage the frame and which cannot be disengaged without a relativeor small end motion between the bars and the frame. In addition to thisfeature, locking devices of some character are desirable to prevent therelative end movement which is required to disengage the bars, but whichshall have capacity for permitting such relative end movement whendesired.

I have shown my improvement in the form which I 'have found in practiceto be excellently adapted for the purposes of the invention, but it isto be understood that I do not limit myself to the details ofconstruction as these may be modified within the scope of the appendedclaims without departingl from the spirit of the invention.

Having' now described my invention what I claim as new and desire toVsecure by Letters Patent, is:

1. In a chart supporting means, the coinbination of a shaft having aplurality of notcheddisks, with a plurality of chart supporting'barsarranged to be received in the notches of the disks and provided withmeans of engagement. with the disks when` said bar is given a slight endmovement.

2. In a chart supporting means, vthe com-V bination of a shaft having aplurality ofnotched disks, with a plurality of chart supporting barsarranged to be received in the' notches of the disks and provided withmeans of engagen'ient with the disks when said bar is given a slight endmovement, said engaging means consisting of angular pins secured to thebars and received in the holes in the disks.

3. In a chart supporting means, the combination of a shaft having aplurality of notched disks, with a plurality of chart supporting barsarranged to be received in the notches of the disks and provided withmeans of engagement with the disks when said bar is given a slight endmovement, and means carried by the shaft for lockingy the bars againstrelative end movement to prevent vthe disengagement thereof with thedisks.

Li. In a chart supporting means, the combination of a shaft having aplurality of notched disks, with a plurality of chart supporting barsarranged to be received inthe notches `of the disks and provided withmeans of engagement with the disks when said bar is given a slight endmovement, and means carried by the shaft for locking the bars againstrelative end movement to prevent the disengagement thereof with thedisks said locking means consistingof a rotary locking plate having anopening through it in alineinent with the chart sup? porting bars sothat any bar may be brought into position in front of said opening whenit is desired to move the bar end-wise for its disengagement.

In a chart exhibiting device, the combination of a rotatable framehaving re 1GOV cesses about its periphery, with a plurality of chartsupporting bars arranged in the recesses about the periphery of theframe, charts secured to the bars, and engaging means between the barsandthe frame having lateral engaging portionsV which may be disengagedby a relative end-wise motion between the bar and the frame.

G. In a chart exhibiting device, the combination of a rotatable framehaving recesses about its periphery, with a plurality of chartsupporting bars arranged in the recesses about the periphery of -theframe, charts secured to the bars, and engaging means between the barsand the frame having lateral engaging portions which may be disengagedby a relative end-wise motion between the bar and the frame, and lockingdevices for holding the bars and rotary frame normally againstrelativeend movenient.

-7. In a chart exhibiting Ydevice Ythe combination of a shaft having aseries of notched disks thereon, with a plurality of chart supportingbars adapted to the notches of the disks, angular engaging pinsprojecting from the inner edges of the bars and engaging the disks tohold the bars to the disks and charts having their ends Wrapped over thebars and provided with slots through which the angular pins project.`

8 In a chart exhibiting device the combination of a shaft having aseries of notched disks thereon, With a plurality of chart supportingbars adapted to the notches of the disks, angular engaging` pinsprojecting from the inner edges of the bars and enf lgaging the disks'to hold the bars to the disks, charts having their ends Wrapped over thebars and provided with slots through which the angular pins project, andmeans to normally hold the chart supporting bars against longitudinal orend movement relative to the shaft and its disks.

In testimony of which invention, I hereunto set my hand.

CHARLES S. JENKINS.

litnesses A. D. JOHNSON, CARRm E. GODSHALL.

